Ratatan Launch Trailer: Patapon Creator Hiroyuki Kotani Reveals Rhythm Roguelike for Nintendo Switch 2

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Ratatan, a new rhythm roguelike action title from veteran creators behind Patapon and Locoroco, has released a launch trailer ahead of its planned Nintendo Switch 2 release.

The project reunites Patapon creator Hiroyuki Kotani with composer Kemmei Adachi, alongside other veterans from Sony Japan, and positions itself as a blend of rhythm gameplay and side-scrolling action that supports online co-op.

According to the game's overview, Ratatan stages large-scale battles where more than 100 characters can clash in a single melee.

Players issue rhythm-based commands to small units called "Cobuns," synchronizing inputs to move and position allies while maintaining the tempo of Ratatan’s original soundtrack.

The overview frames the core loop as a combination of timing, positioning and unit direction: players must decide when to advance, where to place their Ratatan leader, and when to fall back as combat unfolds.

The setting is an island called Rataport.

The promotional material describes Rataport as "an island as lively as a toy box," inhabited by whimsical, animal-like Ratatan creatures who share a common dream: to reach a place called The Everafter and meet a figure referred to as The Goddess.

The narrative emphasis, as presented by the developers, is on perseverance and hope — the Ratatans repeatedly attempt the journey and never give up on their goal.

Gameplay highlights listed in official materials include:

- Rhythm action: execute sequences in time to lead Cobuns and influence battlefield movement.

- Online co-op: up to four players can join the action in cooperative play.

- Large-scale battles: encounters can involve over 100 combatants.

- 2D animation: the team emphasizes hand-crafted 2D animation to convey character and personality during combat.

Hiroyuki Kotani is best known as the creator of Patapon, and Kemmei Adachi previously composed for Patapon and Locoroco; both credits are noted in the Ratatan announcement.

The launch trailer is intended to demonstrate the game's musical foundations and combat spectacle, showcasing the rhythmic inputs and expressive 2D visuals the developers say are central to the experience.

No release date or eShop listing was included in the trailer announcement; interested players should watch official channels for follow-up information.

For fans of rhythm games and side-scrolling action, Ratatan represents a notable reunion of Patapon-era talent attempting a larger-scale, cooperative rhythm experience on modern Nintendo hardware.

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